Rachel Bilson Couldn't Look Hotter In Her Itty-Bitty Bikini!

She was spotted with ex-fiancé Hayden Christensen — are they back on?

Rachel Bilson looked super-sexy in a tiny bikini as she splashed on a Barbados beach on April 22 — and it looked like she was rekindling romance with her ex-fiancé Hayden Christensen!

Rachel, 29, and Hayden, 30, were both spotted on the vacation, despite their troubled history. After becoming engaged in 2008, they split in June 2010. But things certainly seem to be heating up again — especially if Rachel is flaunting off her toned body for her man!

This couple always seemed like a great match — we hope they’ve reconciled!